Uncaught ReferenceError: current is not defined

[ekhaled]

Steps to reproduce

1. Open gist: https://svelte.technology/repl?version=2.9.3&gist=906410361695020ab832e410780acc69
2. Type something in the text box
3. Look at the console for the error

This only happens when the else block has a nested component.
And, only when nestedTransitions == true.

Seems like it is referencing an undefined variable called current in Else block's p: update() method.

[boutros]

I'm also running into Uncaught ReferenceError: current is not defined errors, but I'm not using transitions at all. It happens in a larger application I'm working on now, but so far I haven't been able to create a minimal example which triggers it.